build(deps): bump DiffEngine from 9.1.0 to 10.0.3 in /src (#801)

Bumps [DiffEngine](https://github.com/VerifyTests/DiffEngine) from 9.1.0 to 10.0.3.
- [Release notes](https://github.com/VerifyTests/DiffEngine/releases)
- [Commits](https://github.com/VerifyTests/DiffEngine/commits)

---
updated-dependencies:
- dependency-name: DiffEngine
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Akavache.Tests/Akavache.Tests.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.0" />
     <PackageReference Include="FluentAssertions" Version="6.7.0" />
-    <PackageReference Include="DiffEngine" Version="9.1.0" />
+    <PackageReference Include="DiffEngine" Version="10.0.3" />
     <PackageReference Include="PublicApiGenerator" Version="10.3.0" />
     <PackageReference Include="coverlet.msbuild" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>